The choice of pipes
For a water heated floor is allowed to use materials that meet specific requirements. These include: durability, no welds. There are a number of standards regarding the outer diameter of the pipe and the allowable length:
Underfloor heating is set to work with the coolant at a low temperature. But the reserve must account for unforeseen circumstances. Therefore, the characteristics should be allowed for temperatures up to 95 0C.
Stainless steel corrugated tube
These pipes can be spliced. The fittings that are used in this case are considered the most reliable among others. The material meets all requirements, it is easy to bend with the preservation of position. Coated with high pressure polyethylene on the outside.
The metal is covered with a layer of patina during oxidation, so the copper itself protects against corrosion. Due to this fact the pipes last from 50 to 200 years. Positive aspects are also high heat transfer and plasticity with mechanical strength. Plastic-encapsulated products are used for underfloor heating.
Such pipes are not used for water underfloor heating. The material is strong in bends, so a step of 20 cm to arrange without soldering impossible. And this is unacceptable. In addition, polypropylene has a low heat dissipation, which is not relevant for the work of low-temperature system.
Such pipes are made of cross-linked polyethylene. The material has a classification, which is designated with the letters PEX-a to PEX-d. For a water underfloor heating is recommended for use only the first group. The second option with time shrinks, the third is cheaper, but inferior in quality characteristics. The latter product is withdrawn from production, as the manufacture is accompanied by the participation of nitrogenous compounds.
Alternative material for the production of pipes is PE-RT. This polyethylene serves more than 50 years, can withstand several cycles of freezing with water inside without losing its characteristics and shape. Connections can be made through fittings or welding.
Polyethylene pipes with aluminum reinforcement do not last more than 30 years. Flexible material is available in coils up to 50 m long. If you need more, you can order from the manufacturer and increase the size up to 80 m. The best choice would be PEX-a, PEX-b or PE-RT.
It is important to buy quality materials. Different thermal expansion of polyethylene and metal leads to delamination. Thin layers of 0.8 mm and 0.2-0.4 mm respectively with interruptions can not always cope without consequences. Therefore, before choosing, you need to demand supporting documentation: certificates of quality and compliance.
The screed is a coating applied to the base before laying finishing finishing materials (tile, laminate, parquet, and so on). In some cases, the screed remains a finish, but this is peculiar only for industrial enterprises, while in residential construction such practice is not used.
The main purpose of the screed is to level the floor, obtain the necessary height, as well as increasing the thermal insulating properties. Especially often insulating screed is used on the first floors of private houses. Often warm floors are mounted directly in the screed.
What should be the thickness of insulation
It is not uncommon to see how people insulate their homes with thin slabs of 4, 3 or even 2 centimeters. This is a big mistake. Even the use of the most common 5 cm boards is not very justified.
The thicker the layer of insulation, the warmer it will be in the house and the lower the cost of gas or firewood. Everyone understands that. But not everyone knows that while reducing the thickness of insulation by as much as 40% (from 5 to 3 cm), the total savings on the structure will be only ridiculous 10%. After all, the cost of glue, plaster, mesh, fasteners and work almost does not depend on the thickness of insulation and can not be significantly reduced. That is why there is nothing more stupid than to invest in associated materials and save on the main thing. the thickness of the insulation. Optimal, economically justified insulation of aerated concrete walls for the central regions of Russia. the plate 10 cm. Use a material thickness less than 5 cm makes no sense at all.
How justified is the use of gas blocks in the arrangement of a warm floor in the house?
Hello! We need professional advice. On the first floor of the house, I plan to lay a system “warm floor”. In fact, I have almost already purchased, the necessary materials and components of the system itself, about 80%. Now we need to decide how to arrange the floor itself. I am advised to first lay a layer of aerated concrete, on which to install the piping of water underfloor heating. To fill it all with screed, and use ceramic tiles as the floor covering. Is it possible to design such a floor heating??
Hello, we would not recommend such a model of floor pie with a “warm floor” system. Aerated concrete is designed for constructional thermal insulation. That’s how it is positioned by the manufacturers.
On the basis of these features, this material will not be a heat accumulator, to the extent necessary for this design of the floors. In other words the very essence of underfloor heating is thus neutralized.
There is a second key point. Pipes do not release heat sufficiently from the heating medium to the floor, which means that they overheat. These circumstances will greatly affect both the efficiency of the presented system and its durability.
Screed is a coating applied to the base before laying finishing materials (tile, laminate, parquet and so on). In some cases, the screed remains the final coating, but it is peculiar only for industrial enterprises, while in residential construction such practice is not used.
The main purpose of the screed is to level the floor, obtain the necessary height, as well as increasing the thermal insulating properties. Especially often insulating screed is used on the first floors of private homes. Often, underfloor heating is installed directly into the screed.
Floors in the house of aerated concrete: Aeroc Energy aerated concrete flooring, installation instructions.
This only at first glance may seem like a difficult point, in reality, we have only three options for the base of the foam-block construction:
And, for all their cardinal differences, in our case they just slightly change the order of work and how to make the floors in the house from the foam blocks, at the time of installation of the crate. But first things first.
Choosing the substrate and materials
Let’s decide on the choice of foundation, which we will take as an example, and since it is under the foam concrete version of the structure most often used strip and monolithic base, we will talk about the crate in turn, taking into account the design features of each foundation.
Собачья Будка с ТЕПЛЫМ ПОЛОМ с Wi-Fi своими руками. Timelapse. Пошаговая инструкция
Important! Let’s immediately note that in the device of the floor we will use wood, and we will talk strictly about the rough version.
The first step we will have the choice of material under the rough, and since we have agreed on the wood, we will need:
- Bar. Beams 150×50. Be sure to be dry, otherwise they will hang.
- Waterproofing material, you can use a simple polyethylene or Ruberoid.
- Vapor barrier film.
- Wood screws.
Beams for the floor
Depending on the type of foundation, you may need a screed, but we’ll talk about that later. And now let’s start with a strip foundation for a foam concrete house.
Experts when installing a warm water floor with a gas boiler recommend installing a chimney as well. Also in this case, there is a need to connect the system of emergency prolongation of the circuits. This is in case there are any malfunctions.
You can put balloons for compressed air, with which it is possible to keep the temperature you need in severe frosts. This is because there are some solutions inside that keep them from freezing.
When buying pipes, approach the matter responsibly. The wrong choice can lead to bad consequences. Pay attention to the popularity of the manufacturer, the labeling, as well as the characteristics. They should have the inscription: “Maximum pressure. 10 bar”. A higher figure is not allowed.
If you have any difficulties, then ask for help from a store consultant.
Floor insulation with gas concrete. Underestimated technology with a number of excellent advantages
Floor insulation. An important step towards the efficient use of energy resources, i.e. saving on heating costs. And the more expensive heating, the more acute the question of insulation becomes. In this article, let’s talk a little about floor insulation with aerated concrete. The peculiarities and advantages of this method.
Perhaps the first thing that popped into your head after reading the title of the article. is puzzlement. Indeed, it is usually used as a material for interior partitions or arches in the interior doorways. We are even accustomed to the fact that it can be used to build boxes of buildings. However, floor insulation. Although not very common, but still an effective enough technology to adopt. Let’s talk about it, considering at the same time its main advantages.
Floors in the house of aerated concrete: floor heating from Aeroc Energy, installation instructions.
Underfloor heating in an aircrete house. The system “water underfloor heating”. the most practical and effective heating design that evenly heats the entire room. In a gas concrete house, water underfloor heating is most often installed for heating purposes in rooms such as the kitchen and bathroom. Due to the balanced heating of the floor surface, convection (heat transfer) occurs. Heated air in this case rises and evenly fills the entire volume of the room with a minimum difference (up to 4 degrees) between the temperature of the ceiling and floor.
The building of aerated concrete, where the hydraulic floor heating is installed, will become even warmer. A distinction is made between electric and hydraulic (water) underfloor heating. The second type is made of flexible pipes, which are distributed throughout the entire area of the room. After that, the pipes are connected to the heating system and make a concrete screed. As the heat insulation of the floor is used foam plastic with a thickness of 5 cm or Aeroc Energy gas concrete boards.
The electric variant of a warm floor works by a similar principle, with the difference that nichrome conductors for heating under heat-resistant insulation are used.
The device of a warm floor in the house of aerated concrete.
See installation of underfloor heating here. Note that regardless of the type of heating, the system will have a common design and a similar method of installation. Tubular hydraulic flooring is wise to install in a large house of aerated concrete blocks. Its cost is much cheaper than the electric version.